To ail whom it may concern



TO ALL WHOM IT MAY CONCERN:

@uiten toiles get-trut @ffiesf IMPRCVED MACHINE FCR CUTTING SIcKLESECTICIIs.

SPECIQFICTION'.

Be it known that I, SAMUEL C.'HALL, of White Water, in the county ofWalworth, andStatc of Wisconsin,

lhave'irivented an Improved Machine for Cutting Sickle Sections andFiles; and vIdo hereby declare thatthe `following is a full, clear, andexact description thereof, r'eference being had to the accompanyingdrawings,

making a part of this specification, in`which Figure 1 is an elevationof the front pai-tof the machine. Figure 2 is a plan view of the frontpart of the machine. Figure 3 is an elevation of` one side of the same.v Y Figure 4 is a section in detail, taken in the plane indicated by redline z 1:, lig V3. Figure 5 is a top view of :t sickle section. 1Similar letters of reference indicate corresponding parts iii-theseveral figures.;

. The object of this invention is to `obtain a machine which willserrate or cut the bevelled edges of sickle4V sections for reaping andmowing machines, and which may be used, if desired, for' cutting files.

The nature of my inven ion consists mainly in a machine which is adaptedfor sustaining sickle sections rmly in position during the 'operation ofthe chisel in cutting serrations in their `lievelled surfacesor edges,as will be hereinafter described It also consists in sustaining sicklesections to be cut upon an inclined bed, which is automatically moved'in a y ight line, and st right angles, or nearly so, to the length ofthe chis'el arm during I the cuttingoperation; said ncline'd bed beingso constructed and supported as toadmit of being adjusted and adapted tothevarious sizesf and shapes of the Vblades or sections to be ent, aswill be hereinafter described.

It also consists in sustaining the sickle sections in position to be cutupon a movable bed or table, which can be detached from the machine,raised or lowered or inclined at any required angle,` as may be foundnecessary, as willnhchereinafter described@ V' I am aware that` it isnot new to employ vibrating 'chisel' arms in conjunction with tablesmoving In norizontal planes, or cylindrical beds revolving about acentre, for cutting liles, and therefore I do not lay claim to, suchdevices. My invention is designed for adapting a machine for cuttingsickle sections or acute :angular plates having bevelled cutting edges,which cannot be cut by iile machines hitherto constructed.

To, enable others skilled in the art to understand my invention, willdescribe its construction and operation.

In the accompanying drawings, A represents the frame that supports theworking parts of the machine.

' is the table or bed-p1ate,;tlie rear end of which is supported uponthe rearpart of the frame A. l The front end -oi' said table B issupported upon a flange which is -formed upon the lrear side of' thefront part of frame A. The adjustable way, C, is pivoted to the frontside of the frame A by means of a bolt, D, which passes throughY a holein said frame; and this way C is further secured in place by the bolt E,passingthrougli a curved slot, F, in the' lower extension of the way,and-through a hole in the frame A, as represented. The way C may beadjusted by loosening the clamping nut on the bolt E, and inclining theway either to the right or to the left at any desired angle, after whichsuch inclination can be preserved by tightening the nut on said boltagain. This adjustment enables the machine to out both angles orKbevelled edges of a triangular sickle section, and is not l reqiriredin a machine which is designedonly for cutting les. Upon the front edgeof the wayC is formed a dangeor track, G, for the shoes, H,of the table,I, to slideupon, as shown in the drawings. Upon thefront of theadjustable way C are4 formed bearings, J, in which rotates the screw Kthat moves the slidingtable L" The table I is pivoted to the shoes H,upon which it slides, by the screws L, the ends of which rest incavities formed in the upper sides of the said shoes. M is athumb-screw, passing through the lowerpart of the tablejI, with its endresting against the front side of the adjustable way C.4 By means oftliis screw the Vinclination of the top plate of the table I is adjustedto adapt it to any given bevel of the edge of a sickle sfection. `'Uponthe top of the table I is placed a clamp, N, for holding the section ofa sickle while being cut. This clamp is pivoted to projections, O, whichare formed on the top of said table, and isoperated by the cmu-P,pivoted to sidclamp, as

represented in the drawings. The drawings represent 'the table I asbeing provided ywithonly one clamp,'but this table may he lengthenedlaterally and provided with two or' more clamps, so|that a second`'sickle section may be arranged, on the table ready to be cut while themachine is operating upon 'the first. VTo the side of the lower part ofthe table I is pivoted n. lever, R, to the inner short arm of whichishinged an arm, having a half nut, S', formed upon its upper end, thethread of which corresponds with thc thread of the screw, K. The arm Sis also slotted, andinto its slot enters the stationary guide pin T, tohold the said arnIS in place while l machine is in operation. By raisingthe lever R the half nut S is removed from contact with the screw K',and tl. forward motion of the sliding table I arrested when desired.Upon the outer end of the screw Kis-placeda pulley or pulleys, U, bymeans of which and the band V, motion is communicated .from theipulleyW, on the driving shaft X. This shaft Xrevolves in bearings, Y,`on therear end of ythe table Bfand is driven by means ot' the pulley Z., Uponthe shaft X, over the central part of the rear endof thefitable B, isplaced s cam or trip wheel, A', which, as the shaft X rotates, trips thelever B', and operates the chisel or cutter C', attached to the otherend of said lever. The lever B' is hung and pivoted to two projections,D'. attached to the table B, by bolts which pass-through oblong slots insaid table, which enable tho lever to be adjusted according to the'requirements of thework to be done. The central part of the table Bis'cut away to allow space for the action of the spring E', one end ofwhich is secured to the front part of the table B, as shown in iig. 2,and the other end presses against the under side of the short arm of thelever B', increasing the force of the descending stroke of the chiselC'. This chisel C' is secured in a socket in the front end of the leverB' by a set-screw, F', so that the said chisel may be set at any desiredangle to cuteither edge of the sickle sections. In the bottom of thevertical lslot in frame in which the forward part of the lever Il works,is placed a rubber spring, G', to counteract the reaction of the chiselC. H is a catch arranged so as to catch beneath the lever B', andprevent the action of the chisel C', except when-said catch is held backby means of the treadle I'.and connecting rod J'.' K' is a spring whichforces the catch H' forward against the said lever B', when this'catchis released by removing the pressure from the treadle I'.

In operatingthe machine, the adjustable 'way C is inclined in the properdirection and at the proper angle;

the table I is adjusted by the screws L and M, and the section to be cutsecured by the clamp N. Then, by depressing the lever R, the half nut Sis brought into contact with the screw K, and the table I is carriedfo'rward under the chisel'C. At the saine time the lever B' is releasedfrom the catch H' by depressing the treadle I', and the chisel C allowedto come into contact with the section clamped to the tzle I. When thesectiony cn the table I has passed the chisel C' the pressure upon thetreadle I' is removed, which allows the catch H to take' hold of thelever B' and stop the action of the chisel C'. And raising the lever R,the half nut S is moved away from the screw K, and the table I allowed.to slide-back to its irst position. By means ofthe different-sizedpulleys, V and W, the 'table I may be made to move faster or slower, scas to cut coarser or finer teethon thesections, as may be desired Bymeans of the adjusting screw whichis applied bcucaththe table I, thistable can be adjusted to a horizontal position and in a plane parallelto the upper surface of the way C, in which position the machine may beused for cutting files.

It will bc seen from the above description that the sickle sections canbe secured in suchposition upon a movable bed or table that theirbevelled edges will be in a plane parallel tothe edge of the chisel whenstruck by it. Also, that the table upon which the work is secured isapplied to an adjustable way, by means of which the teeth upon b'othedges ofv a' sickle section can be cut at any desired angle withoutchanging the position of the chisel arm. By means of the cone pulleys, Vand W, tlerelative speed of the chisel arm and table I can be regulatedfor cutting fine or coarse teeth, as may be desired. And by zeans of thecatch H' 'and treadle I, the motionof the chisel arm can be arrested atany desiredl moment.

If do lnot confine my invention to the precise contrivances hereindescribed, and represented in the drawings,

A for sustaining sickle sections in proper positions for having theirbevelled 'edges serrated, as other devices may becmployc'd forthispurpose. Nor do I conine mybinvention to a vibrating chisel arm, as thechisel may be applied to a rectilinear reciprocating stock.

Having described one mode of carrying out my invention, what I claim asnew, and desire to secure by Letters Patent, is l A 1. An improvedmachine which is adapted for sustaining sickle'sections beneath areciprocating chisel in such position that the chisel will formserx'ations or teeth upon the bevelled edges of said sections,constructed substantially as described. y

2,' The combination of an adjustable ltable I, with an adjustable way'C, afeeding screw K, a half nut connection S', and a le-cntting chisel,or a chisel whichis adapted for cutting teeth upon sickle sections,substantially as described. i l v 3. k'.lhe construction, substantiallyas described, of the adjustable way C, for receiving and supporting areciprocating table, und admitting of said table being adjusted atdifferent angles with respect to the cutting edge of a chisel C',substantially as described. j v

4. The'arrangement of the adjustable table Iupon the adjustable way C,so as to move at right angles to the chisel arm B, beneath 'the chiselC', substantially as described.`

5. Sustaining the adjustable table I upon the way C, by means ofadjustable bearings, substantially as described. v

6. In combination with an adjustable table I, and an adjustable way 0,11claim the means, substantially as described, for feeding the said tablewith a fast or slow movement, according to the' size of the teethrequired upon the bevelled edges of the. sickle sections, substantiallyas specified.

7. Constructing the upper portion ofthe frame A with a vertical slotthrough it for receiving and guiding the chisel arm B', and also forreceiving a spring, Gr', upon which said arm strikes in its descendingstrokes, said slot being arranged directly over the axis of the way C,substantially as described.

8. The combination of he spring latch H', and treadle I', with the meansherein described for cutting sickleA sections or tiles, substantially asand for the purpose set forth.V l i 9. The sliding adjustable table I,with its clamp or clamps N, its screws L and M, nut S', feed screw K, incombination with the adjustable way of amachine for cutting sicklesections or files, substantially as described.

10. 'The adjustable way C, in combination with the frame A, of themachine, both being constructed and arranged. substantially as and forthe purposes described.

SAMUEL C.' HALL. Witnesses Janna D. Recursos,A N. S. MURPHY.

